/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.nutch.webui.client.impl;

import static javax.ws.rs.core.MediaType.APPLICATION_JSON;

import java.util.Map;

import org.apache.nutch.webui.client.NutchClient;
import org.apache.nutch.webui.client.model.ConnectionStatus;
import org.apache.nutch.webui.client.model.JobConfig;
import org.apache.nutch.webui.client.model.JobInfo;
import org.apache.nutch.webui.client.model.NutchStatus;
import org.apache.nutch.webui.model.NutchInstance;
import org.apache.nutch.webui.model.SeedList;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.api.json.JSONConfiguration;

public class NutchClientImpl implements NutchClient {
	private Client client;
	private WebResource nutchResource;
	private NutchInstance instance;

	public NutchClientImpl(NutchInstance instance) {
		this.instance = instance;
		createClient();
	}

	public void createClient() {
		ClientConfig clientConfig = new DefaultClientConfig();
		clientConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING,
				true);
		this.client = Client.create(clientConfig);
		this.nutchResource = client.resource(instance.getUrl());
	}

	@Override
	public NutchStatus getNutchStatus() {
		return nutchResource.path("/admin").type(APPLICATION_JSON)
				.get(NutchStatus.class);
	}

	@Override
	public ConnectionStatus getConnectionStatus() {

		getNutchStatus();
		return ConnectionStatus.CONNECTED;
		// TODO implement disconnected status
	}

	@Override
	public String executeJob(JobConfig jobConfig) {
		return nutchResource.path("/job/create").type(APPLICATION_JSON)
				.post(String.class, jobConfig);
	}

	@Override
	public JobInfo getJobInfo(String jobId) {
		return nutchResource.path("/job/" + jobId).type(APPLICATION_JSON)
				.get(JobInfo.class);
	}

	@Override
	public NutchInstance getNutchInstance() {
		return instance;
	}

	@SuppressWarnings("unchecked")
	@Override
	public Map<String, String> getNutchConfig(String config) {
		return nutchResource.path("/config/" + config).type(APPLICATION_JSON)
				.get(Map.class);
	}

	@Override
	public String createSeed(SeedList seedList) {
		return nutchResource.path("/seed/create").type(APPLICATION_JSON)
				.post(String.class, seedList);
	}
}
